[YANGTOOLS-1050] Leafref resolution breaks down on leafref involving deref()

Relates — Sun, 10 Apr 2022 18:36:04 +0000

The following model:

module opendaylight-leafref-deref {
  yang-version 1.1;
  namespace "urn:opendaylight:leafref:deref";
  prefix test;

  identity target-base;

  typedef target-type {
    type identityref {
      base target-base;
    }
  }

  grouping grp {
    leaf id {
      type string;
    }
    leaf type {
      type target-type;
    }

    list secondary {
      key "id type";
      leaf id {
        type leafref {
          path "/grp-uses/id";
        }
      }
      leaf type {
        type leafref {
          path "deref(../id)/../type";
        }
      }
    }
  }

  list grp-uses {
    uses grp;
    key "id type";
  }
}

causes a StackOverflowError:

Exception in thread "main" java.lang.StackOverflowError
        at com.google.common.base.CharMatcher$BitSetMatcher.matches(CharMatcher.java:997)
        at org.opendaylight.yangtools.yang.common.AbstractQName.checkLocalName(AbstractQName.java:69)
        at org.opendaylight.yangtools.yang.common.QName.create(QName.java:116)
        at org.opendaylight.yangtools.yang.common.QName.create(QName.java:142)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.stringPathPartToQName(SchemaContextUtil.java:548)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.lambda$resolveRelativeXPath$2(SchemaContextUtil.java:615)
        at com.google.common.collect.Iterators$6.transform(Iterators.java:783)
        at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:47)
        at com.google.common.collect.Iterators$ConcatenatedIterator.next(Iterators.java:1361)
        at com.google.common.collect.Iterables$6$1.next(Iterables.java:882)
        at com.google.common.collect.Iterables$6$1.next(Iterables.java:882)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findNodeIn(SchemaContextUtil.java:364)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findNodeIn(SchemaContextUtil.java:375)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findNodeInModule(SchemaContextUtil.java:333)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findNodeInSchemaContext(SchemaContextUtil.java:241)
        at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findDataSchemaNodeForRelativeXPath(SchemaContextUtil.java:210)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:522)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForLeafrefOrIdentityRef(AbstractTypeProvider.java:302)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:196)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:159)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.resolveTypeFromDataSchemaNode(AbstractTypeProvider.java:726)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:564)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForLeafrefOrIdentityRef(AbstractTypeProvider.java:302)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:196)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:159)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.resolveTypeFromDataSchemaNode(AbstractTypeProvider.java:726)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:564)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForLeafrefOrIdentityRef(AbstractTypeProvider.java:302)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:196)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.javaTypeForSchemaDefinitionType(AbstractTypeProvider.java:159)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.resolveTypeFromDataSchemaNode(AbstractTypeProvider.java:726)
        at org.opendaylight.mdsal.binding.yang.types.AbstractTypeProvider.provideTypeForLeafref(AbstractTypeProvider.java:564)
[...]

OpenDaylight JIRA

[YANGTOOLS-1050] Leafref resolution breaks down on leafref involving deref()